<template>
  <div class="panel-tab__content">
    <el-form size="small" label-width="90px" >
      <el-form-item label="回路特性">
        <el-select v-model="loopCharacteristics" @change="changeLoopCharacteristicsType">
          <!--bpmn:MultiInstanceLoopCharacteristics-->
          <el-option label="并行多重事件" value="ParallelMultiInstance" />
          <el-option label="时序多重事件" value="SequentialMultiInstance" />
          <!--bpmn:StandardLoopCharacteristics-->
          <el-option label="循环事件" value="StandardLoop" />
          <el-option label="无" value="Null" />
        </el-select>
      </el-form-item>
      <template v-if="loopCharacteristics === 'ParallelMultiInstance' || loopCharacteristics === 'SequentialMultiInstance'">
        <el-form-item label="循环基数" key="loopCardinality">
          <el-input v-model="loopInstanceForm.loopCardinality" clearable @change="updateLoopCardinality" />
        </el-form-item>
        <el-form-item label="集合" key="collection">
          <el-input v-model="loopInstanceForm.collection" clearable @change="updateLoopBase" />
        </el-form-item>
        <el-form-item label="元素变量" key="elementVariable">
          <el-input v-model="loopInstanceForm.elementVariable" clearable @change="updateLoopBase" />
        </el-form-item>
        <el-form-item label="完成条件" key="completionCondition">
          <el-input v-model="loopInstanceForm.completionCondition" clearable @change="updateLoopCondition" />
        </el-form-item>
        <el-form-item label="异步状态" key="async">
          <el-checkbox v-model="loopInstanceForm.asyncBefore" label="异步前" @change="updateLoopAsync('asyncBefore')" />
          <el-checkbox v-model="loopInstanceForm.asyncAfter" label="异步后" @change="updateLoopAsync('asyncAfter')" />
          <el-checkbox
            v-model="loopInstanceForm.exclusive"
            v-if="loopInstanceForm.asyncAfter || loopInstanceForm.asyncBefore"
            label="排除"
            @change="updateLoopAsync('exclusive')"
          />
        </el-form-item>
        <el-form-item label="重试周期" prop="timeCycle" v-if="loopInstanceForm.asyncAfter || loopInstanceForm.asyncBefore" key="timeCycle">
          <el-input v-model="loopInstanceForm.timeCycle" clearable @change="updateLoopTimeCycle" />
        </el-form-item>
      </template>
    </el-form>
  </div>
</template>

<script lang="ts" setup>
  defineOptions({ name: 'ElementMultiInstance' })

  const props = defineProps({
    businessObject: Object,
    type: String
  })
  const prefix = inject('prefix')
  const loopCharacteristics = ref('')
  //默认配置，用来覆盖原始不存在的选项，避免报错
  const defaultLoopInstanceForm = ref({
    completionCondition: '',
    loopCardinality: '',
    extensionElements: [],
    asyncAfter: false,
    asyncBefore: false,
    exclusive: false
  })
  const loopInstanceForm = ref<any>({})
  const bpmnElement = ref(null)

  const multiLoopInstance = ref(null)
  const bpmnInstances = () => (window as any)?.bpmnInstances

  const getElementLoop = (businessObject) => {
    if (!businessObject.loopCharacteristics) {
      loopCharacteristics.value = 'Null'
      loopInstanceForm.value = {}
      return
    }
    if (businessObject.loopCharacteristics.$type === 'bpmn:StandardLoopCharacteristics') {
      loopCharacteristics.value = 'StandardLoop'
      loopInstanceForm.value = {}
      return
    }
    if (businessObject.loopCharacteristics.isSequential) {
      loopCharacteristics.value = 'SequentialMultiInstance'
    } else {
      loopCharacteristics.value = 'ParallelMultiInstance'
    }
    // 合并配置
    loopInstanceForm.value = {
      ...defaultLoopInstanceForm.value,
      ...businessObject.loopCharacteristics,
      completionCondition: businessObject.loopCharacteristics?.completionCondition?.body ?? '',
      loopCardinality: businessObject.loopCharacteristics?.loopCardinality?.body ?? ''
    }
    // 保留当前元素 businessObject 上的 loopCharacteristics 实例
    multiLoopInstance.value = bpmnInstances().bpmnElement.businessObject.loopCharacteristics
    // 更新表单
    if (
      businessObject.loopCharacteristics.extensionElements &&
      businessObject.loopCharacteristics.extensionElements.values &&
      businessObject.loopCharacteristics.extensionElements.values.length
    ) {
      loopInstanceForm.value['timeCycle'] =
        businessObject.loopCharacteristics.extensionElements.values[0].body
    }
  }
  const changeLoopCharacteristicsType = (type) => {
    // this.loopInstanceForm = { ...this.defaultLoopInstanceForm }; // 切换类型取消原表单配置
    // 取消多实例配置
    if (type === 'Null') {
      bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
        loopCharacteristics: null
      })
      return
    }
    // 配置循环
    if (type === 'StandardLoop') {
      const loopCharacteristicsObject = bpmnInstances().moddle.create(
        'bpmn:StandardLoopCharacteristics'
      )
      bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
        loopCharacteristics: loopCharacteristicsObject
      })
      multiLoopInstance.value = null
      return
    }
    // 时序
    if (type === 'SequentialMultiInstance') {
      multiLoopInstance.value = bpmnInstances().moddle.create(
        'bpmn:MultiInstanceLoopCharacteristics',
        { isSequential: true }
      )
    } else {
      multiLoopInstance.value = bpmnInstances().moddle.create(
        'bpmn:MultiInstanceLoopCharacteristics')
    }
    bpmnInstances().modeling.updateProperties(toRaw(bpmnElement.value), {
      loopCharacteristics: toRaw(multiLoopInstance.value)
    })
  }
  // 循环基数
  const updateLoopCardinality = (cardinality) => {
    let loopCardinality = null
    if (cardinality && cardinality.length) {
      loopCardinality = bpmnInstances().moddle.create('bpmn:FormalExpression', {
        body: cardinality
      })
    }
    bpmnInstances().modeling.updateModdleProperties(
      toRaw(bpmnElement.value),
      multiLoopInstance.value,
      {
        loopCardinality
      }
    )
  }
  // 完成条件
  const updateLoopCondition = (condition) => {
    let completionCondition = null
    if (condition && condition.length) {
      completionCondition = bpmnInstances().moddle.create('bpmn:FormalExpression', {
        body: condition
      })
    }
    bpmnInstances().modeling.updateModdleProperties(
      toRaw(bpmnElement.value),
      multiLoopInstance.value,
      {
        completionCondition
      }
    )
  }
  // 重试周期
  const updateLoopTimeCycle = (timeCycle) => {
    const extensionElements = bpmnInstances().moddle.create('bpmn:ExtensionElements', {
      values: [
        bpmnInstances().moddle.create(`${prefix}:FailedJobRetryTimeCycle`, {
          body: timeCycle
        })
      ]
    })
    bpmnInstances().modeling.updateModdleProperties(
      toRaw(bpmnElement.value),
      multiLoopInstance.value,
      {
        extensionElements
      }
    )
  }
  // 直接更新的基础信息
  const updateLoopBase = () => {
    bpmnInstances().modeling.updateModdleProperties(
      toRaw(bpmnElement.value),
      multiLoopInstance.value,
      {
        collection: loopInstanceForm.value.collection || null,
        elementVariable: loopInstanceForm.value.elementVariable || null
      }
    )
  }
  // 各异步状态
  const updateLoopAsync = (key) => {
    const { asyncBefore, asyncAfter } = loopInstanceForm.value
    let asyncAttr = Object.create(null)
    if (!asyncBefore && !asyncAfter) {
      // this.$set(this.loopInstanceForm, "exclusive", false);
      loopInstanceForm.value['exclusive'] = false
      asyncAttr = { asyncBefore: false, asyncAfter: false, exclusive: false, extensionElements: null }
    } else {
      asyncAttr[key] = loopInstanceForm.value[key]
    }
    bpmnInstances().modeling.updateModdleProperties(
      toRaw(bpmnElement.value),
      multiLoopInstance.value,
      asyncAttr
    )
  }


  watch(
    () => props.businessObject,
    (val) => {
      bpmnElement.value = bpmnInstances().bpmnElement
      getElementLoop(val)
    },
    { immediate: true }
  )

  onBeforeUnmount(() => {
    multiLoopInstance.value = null
    bpmnElement.value = null
  })

</script>
